i need diff understanding :) Post: 302357892

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Top Forums Shell Programming and Scripting i need diff understanding :) Post 302357892 by taiL on Wednesday 30th of September 2009 11:34:07 PM

10-01-2009

Registered User

i've checked all the white spaces but I still can't see where else the problem is this what i have now

Code:

                if [ ! -f $file1 ]; then
                   continue
                   fi
                for file2 in *
                  do
                  if [ ! -f $file2 ]; then
                     continue
                     fi

		#//checks if file1 is being compared to another different file; not itself
                if [ "$file1" \< "$file2" ]; then 
                     set outPut = `diff "$file1" "$file2" | wc -l`
                     if [ $outPut == 0 ]; then
                         echo " "$file1" and "$file2" " # // prints file if same content
                     fi
                fi

Again the error message is

Quote:

line 62: [: ==: unary operator expected
./forYourEyesOnly.bash: line 50: [: untitled: binary operator expected
./forYourEyesOnly.bash: line 55: [: untitled: binary operator expected

62: refers to if [ $outPut == 0 ]; then
50. refers to if [ ! -f $file1 ]; then
55. refers to if [ ! -f $file2 ]; then

White spaces again?

taiL

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LEARN ABOUT LINUX

xzdiff

XZDIFF(1)							     XZ Utils								 XZDIFF(1)

NAME

       xzcmp, xzdiff, lzcmp, lzdiff - compare compressed files

SYNOPSIS

       xzcmp [cmp_options] file1 [file2]
       xzdiff [diff_options] file1 [file2]
       lzcmp [cmp_options] file1 [file2]
       lzdiff [diff_options] file1 [file2]

DESCRIPTION

       xzcmp  and xzdiff invoke cmp(1) or diff(1) on files compressed with xz(1), lzma(1), gzip(1), or bzip2(1).  All options specified are passed
       directly to cmp(1) or diff(1).  If only one file is specified, then the files compared are file1 (which must have a suffix of  a  supported
       compression format) and file1 from which the compression format suffix has been stripped.  If two files are specified, then they are uncom-
       pressed if necessary and fed to cmp(1) or diff(1).  The exit status from cmp(1) or diff(1) is preserved.

       The names lzcmp and lzdiff are provided for backward compatibility with LZMA Utils.

SEE ALSO

       cmp(1), diff(1), xz(1), gzip(1), bzip2(1), zdiff(1)

BUGS

       Messages from the cmp(1) or diff(1) programs refer to temporary filenames instead of those specified.

Tukaani 							    2010-09-27								 XZDIFF(1)